This super delicious easy pan seared beef steak with mushroom sauce is a favorite at home. The steak and sauce are prepared in one pan, which saves cooking and dishwashing time.
Rinse your steaks and pat dry with a kitchen towel. Season the steaks on both sides with salt and pepper.
Heat up a pan with the butter and allow the butter to melt. Add the onion slices to the pan and keep on medium heat.
Cook the onions for 1-2 minutes before you place the steaks into the pan over the onions. The onions prevent splashing of the butter.
Sprinkle the Herb de Provence and place the finely chopped garlic over each steak. One side of the steak is enough.
Turn the steak once you can see it has turned it's color and looks cooked. Cook both sides and control your heat when pan searing the steaks.
Decide how well you want your steak to be done and check with a meat thermometer the temperature. Refer to the temperature chart in the post.
Take the steak out of the pan and keep aside in a serving dish. Leave back the onions in the pan.
To prepare the sauce, add the sliced mushrooms to the pan. Add some more butter if too dry and cook the mushrooms soft.
Pour the white wine into the pan over the mushrooms. Stir cook a bit and then continue to add in the broth and cream.
Season with salt and black pepper if needed. Add pink or green peppercorn to the sauce if you like to add some more flavors. You can add fresh parsley too.
Mix everything properly and cook the mushroom sauce down until you think it's ready to be served over the steaks.